15-year-old girl stabbed to death in London

LONDON - Police arrested a man in his 30s in south London on Monday after a 15-year-old girl was found stabbed in a lift, the 16th teenager to die a violent death in the British capital this year.
Officers found the girl suffering from stab wounds in the lift of a block of flats in Baylis Road, near Waterloo Station in Southwark, London, the Metropolitan Police Service said.
London's ambulance service said it had dispatched a helicopter and ground ambulance to the scene shortly before 4 p.m.
"Sadly, despite extensive efforts to resuscitate the patient, she was pronounced dead at the scene," an ambulance service spokeswoman said.
Police said they had arrested a man in his 30s in the Lambeth area, but gave no further details of the suspect. They said they were keeping an open mind about a possible motive but did not think the crime was gang-related.
Police have launched a campaign to discourage knife crime in the capital, while newly-elected London Mayor Boris Johnson has made tackling youth violence one of his priorities.